National Automated Clearing House Association. The national association comprising a local ACH association that establishes standards, rules, and procedures to enable depository financial institutions that are members of regional ACH associations to exchange electronic payments.
National Automated Clearing House Association. The national trade association for the electronic payment associations, which establishes the rules, industry standards, and procedures governing the exchange of commercial ACH payments by depository financial institutions.
( ational utomated learing ouse ssociation) a national association that develops electronic solutions for today's different payment systems; NACHA also makes all of the business practices and operating rules for financial institutions that deal with the ACH network